That poor man in Walsall was effectively murdered by dogs, no? Rather than the law prosecuting an owner for not controlling his dogs, surely he should be prosecuted for manslaughter? I know that's what I'd want if I were a relative or friend of the dead man.
I'm assuming existing dogs would have to be muzzled (but as you say some owners won't be arsed) but future purchases won't be allowed (if they can really police that). I could be wrong of course. Prison sentences need to be far harsher as a deterrent.